Paper-feeding mechanism



Oct. 8, I929. AQFo oTHoRAP 1,730,565

PAPER FEEDING MECHANISM Filed April 50, 1925 4 Sheets-Shet -1 N 3140mm Oct. 8; 1929. H. A. FOOTHORAP PAPER FEEDING MECHANISM 4 Sheets-Shet Filed April so, 1923 mi $N hi S N. m N\ \N H \N 1 I N &w m .mN l I l i 11- -io MN .w n QMW m vwl N 1* 1 l Maw W.

Oct. 8, 1929. A, HQ M 11,730,566

PAPER FEEDING MECHANISM Filed April 30. 1925 4 Sheets-Sheet 5 v GHQ:

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4 Sheets-Sheet 4 H. A. FOOTHORAP PAPER FEEDING MECHANISM Filed April 50, 1923 GWEN-l6 .FZDOUUQ Winn-gunman LO GEO Patented Oct. 8, 1929.

UNITED, STATES PATENT OFFICE HARRY A. FOOTHORAP, OF HARRISBURG, PENNSYLVANIA, ASSIGNOR TO ELLIOTT- EQISHER COMPAN A. CORPORATION OF DELAWARE I ram:n-rnnnxrre. uncnmism Application filed- April 30,

its equivalent to facilitate the making-of what is known as a condensedrecord. I

Theobject of the invention is to produce an automatic paper feeding means which will advance a condensed record sheet whenever a superposed sheet, as for instance, a bill, is displaced, to the end thatas successive bills located ata given point are written upon-the record transferred to the subjacent condensed record sheet will appear in proper position upon the latter.

To the accomplishment of the above object, the illustrated embodiment of the invention includes the depressible flat platen of a type writing machine and an' endless paper earner which retains the record sheet and is moved step by step as the plateii is repeatedly depressed to advance the record sheet step by step with relation to the common printing point of a series of bill sheets orthe like which are successively placed in position to be printed upqn by the typewriter.

' Inthe drawings:

' Figure 1 is a plan view of a platen equippe with my invention.

, Figure 2 is a bottom plan view ofthe subject-matter of Figure 1. Q

Figure 3 is a transverse section on the line 33 of Figure 2.

Figure 4 is a large longitudinal section on the'line 4-4 of Figure 1.

Figure 5 is a transverse section onthe line 55 of Figure 1.

Fig. 6 is a detailed section on the line 66 of Fig. 1.

Fig. 7 is a plan view showing the relation of the bill and record sheets.

Figure 8, is a section on the line 8-.8 of Figure 7. i

Figure 9, is a perspective and 1 Figure 10, is a similar figure of another detail.

1 indicates a flat platen vertically movable in a platen frame 2, as usual in flat platen typewriting machines of wh at is known as the view of a detail,

Elliott-Fisher type. The side members 3 and .that the paper to be written upon may be downward bya treadle or other suitable device (not shown) connected to the swinging cranks13 in the manner disclosed vinmy coto engage'marginal openings in a condensed 1923. Serial No. 635.678.

4 of the frame 2 are surmounted by tracks or guides 5 for the travelling line space frame of the machine. These tracks or guides 5 extend over the edge of the platen, as shown, so

clamped against the under side of the rails by theplaten when the latter is in its elevated or normal position. f

. The means whereby the platenis elevated and depressed may be of any desired construction so far as the present invention is concerned. The mechanism shown'is' substantially like that disclosed in my Patent No. 1,207,152, in so far as the depression of the platen is concerned, a'pair of swinging members 6 and 7 being carried by the frame and connected to the platen as at 8 and 9 to depress the platen when the members are swung members 6 and 7 as by a chain 10. The elevation or retraction of the platen from its depressed position is accomplished by retraction springs 11 and .12 operating upon bell pending application No. 434,250.

The primary element of the paper feeding mechanism is an endless band or tapev 14 provided with spaced studs 15. which are designed so record sheet 16 which, as usual, underlies a bill sheet 17, for instance, which is clamped between the platen and the left-hand rail 5.

' The stud tape 14 has its upper run disposed over the right-hand margin of the platen and is carried around front and rear guide rolls 18 and 19. The front roll 18 isfixed to a shaft 20 afforded a bearing in the side member 4 of the frame, and the outer end of said shaft is providedwith a knurled wheel 21 by means of which the front roll 18 may be rotated. for the purpose of feeding or adjusting the stud tape by hand. The rear roll 19 is carried by astub shaft 22 carried by a bracket 23 secured to a transverse frame member 24.

The means whereby the depression of the platen will automatically feed'the stud tape 26 and having its upturned front end 27 pro vided with a roller 28 held against the under surface of the platen 1 by a retracting spring 29. At the opposite end of the lever is 5 pivoted an upstanding feed pawl 30 having at its'upper end a cam 31 co-acting with a stud '32 to resist a tendency exerted by a spring 33 to swing the tooth. 34 of the pawl into engagement with a ratchet wheel 35. The wheel 35 19 is mounted at one end of a shaft36 afforded rise to the position indicated in dotted lines.

As the feed pawl rises, the cam 3'1 will assume such relationto the stud 32 that the feed pawl will be drawn by the spring 33 into 25 engagement with the ratchet 'wheel 35 and advance the latter a .suflicient distance to locate said sheet in position for the-next bill which may therefore occupy the same position as the bill which has been displaced.

. 80 -It is thought that from the foregoing, the

construction, operation and advantages of the illustratedembodiment of my invention will -be clearly understood, but I reserve the right to effect such modifications as may come with- I 8 in the scope of the protection prayed.

' Whatl claim is: v v 1. The combination with a vertically movable platen, of a horizontally'movable paper 3 feeding device operated thereby.

2. .The combination with a de ressible flat platen, of means operated there y for moving a work sheet in the direction of line spacing. Y

3. The combination with a depressible fiat platen, of an endless pa er carrier associated therewith-"and operate thereby to advance or feed a work sheet step by step over the platen.

7. The combination with relatively separable paper clamps, of an endless paper car-' rier'equipped with paper engaging devices, and feeding the paper relative to the clamps, and means for rendering the clamps and paper carrier inter-dependent in operation.

8. The combination with a paper clamp, one element of which is a platen supporting a paper sheet retained on the platen by the clamp, an endless paper carrier operative to feed a second sheet over said platen, and means whereby, when the clamp is operated to release the first named sheet, the endless paper carrier will be moved to feed the second sheet to a new printing position.

9. The combination with a flat platen movable toward or from the writing plane, of paper feeding mechanism including devices having travelling movement over the platen, and means for effecting travelling movement of said devices by movement of the platen in one direction.

10. The combination with a movable fiat platen, of a clamping member cooperating with one side edge. of the platen to clamp a work sheet thereon, devices having travelling movement over the opposite side edge of the platen to feed another sheet thereover in a line spacing direction, and means for eflecting travelling movement of said devices by movement of the platen.

In testimony whereof I hereunto affix my signature.

- HARRY A. FOOTHORAP.

4. The combination a depressibleflat I platen, of apaper carrier associated therewith, manual-means for movingthe-carrier and carrier feeding means controlled-by the -platen. 1 v 7 5. The combinationwith a vertically move no member, of a platen movable toward and from said member to clamp and "release a work sheet, of an endless earner for asecond '55 able fiat-platen, of an endless paper carrier work sheet and means automatically operated.

to advance the carrier upon the movement of- 85 the platen to release the sheet first named. 

